What color is Drawing, Study for Section of Ceiling Ornament, late 19th century ?

Source CSS3 CSS4
#7e7d6a
 
#808080
grey
#808080
grey
#6e5d40
 
#556b2f
dark olive green
#556b2f
darkolivegreen
#9f9985
 
#bc8f8f
rosy brown
#bc8f8f
rosybrown
#d0caaa
 
#c0c0c0
silver
#c0c0c0
silver